the source package icedove is now obsolete since the reflecting binary
packages are now provided by src:thunderbird for all releases. The
switch of the source package name is now about three months ago and no
unexpected issues happen due the name switching. So I guess it's now o.k.
to remove the source package related entries for the old icedove
package. Please remove related files on icedove from the archive.
I'm the current maintainer of thunderbird and was also the maintainer of
icedove in the near past.
As this is my first RM request please ping me if I've maybe overseen